Durability. Strength. No Red Rust.
The ProZ™ SD fastener is built for tough metal-to-metal installations, ensuring a weather-tight seal every time. Featuring a zinc-aluminum alloy cap that prevents red rust and an EPDM rubber washer for long-lasting protection, these fasteners are designed to withstand the harshest conditions and maintain compatibility with all panel finishes.
 
Key Features (Both #3 and #5 Tips)
5/16" Hex Head for easy installation
Zinc-Aluminum Alloy Cap – never red rusts
EPDM Rubber Washer for superior sealing
50-Year Warranty – long-term reliability
Quick Shipping available
Designed to fasten metal-to-metal
 
ProZ™ SD #3 Drill Point
For lighter steel applications
Drills through steel up to: 0.210" thick
Shear Strength: 2,800
Tensile Strength: 4,500
Torsional Strength: 129
 
Available Sizes & Packaging:
Sold by the bag of 250
 
ProZ™ SD #5 Drill Point
For heavy-gauge steel applications
Drills through steel up to: 0.500" thick
Shear Strength: 2,760
Tensile Strength: 3,246
Torsional Strength: 100
Available Size: 1-1/4"
Packaging: 2,500 pcs/box
Best For: Heavy-duty installations requiring penetration through thicker substrates up to 1/2"
 
Choosing Between #3 vs. #5 Tip
#3 Tip: Ideal for everyday applications with thinner steel (up to 0.210").
#5 Tip: Built for heavy-gauge steel (up to 0.500").